henna /hɛnə/noun 4adjective 1verb 1forms 3 noun4 •A shrub, Lawsonia inermis, having fragrant reddish flowers. •A reddish plant substance, prepared from the dried leaves of this plant, used for temporary tattoos and hair coloring. Hair colorings range from bright red to earth brown to near black. •A rich reddish-brown colour. •A flower of this plant. adjective1 •Of a rich reddish-brown colour. verb1 •To dye or tattoo with henna. formshennaed · hennaing · hennas